Leukodystrophy, Hypomyelinating, 23, with Ataxia, Deafness, Liver Dysfunction, and Dilated Cardiomyopathy, also known as hld23, is related to hypomyelinating leukodystrophy 23. An important gene associated with Leukodystrophy, Hypomyelinating, 23, with Ataxia, Deafness, Liver Dysfunction, and Dilated Cardiomyopathy is RNF220 (Ring Finger Protein 220). Affiliated tissues include liver and brain, and related phenotypes are hyperreflexia and ataxia